Featuring Plywood in Buildings - Engineered Wood Products ...

Plywood Interior Wall & Ceiling LiningPlywood with a high quality real wood face veneer can be clear finished to give a real timberappearance to walls, to ceilings or as an eaves lining on verandahs. The plywood face can betraditional rotary peeled or sliced veneer. Alternatively, the plywood can be V grooved thus provinga lining having a traditional planked effect to V jointed boards.Plywood SpecificationIf the lining is designed to have a secondaryas a bracing or a structural diaphragm theplywood must be structural plywood toAS/NZS2269. However, for non structurallining applications completely protected fromthe weather any plywood product withappropriate face veneer is acceptable. Theplywood must be manufactured to aminimum of AS/NZS2270.The appearance of decorative veneer variesconsiderably depending on species, timbersource and the method of veneering andplywood manufacturer. Most plywood liningin the marketplace has attractive rotarypeeled pine veneer faces; however, somesliced veneers are available and can bespecially matched for colour and figure. Theface veneers are sanded smooth ready forthe selected surface finish. The back side ofthe decorative plywood normally is nondecorativeand is of reduced quality.For ceilings, 9mm and 12mm plywood liningsare available with tongued and groovededges to negate the need for nogging underthe panel sides. If square edged panels areused framing is required to support all edges.Recommended minimum plywood thicknesses are given in table 6. Standard panel size is 2400mmx 1200mm. 2700mm x 1200mm panels are not as readily available.InstallationTo minimise shrinkage or expansion of panels after installation, it is good practice to let theplywood panels acclimatise to room temperature and humidity for several days before final fixing.This is best achieved by breaking open the packs and laying out the panels to allow air to circulatearound them.17